Glossary of Terms

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Term Definition

A pair of diagonal braces that meet at one of their ends, thus forming a “V”. Generally, one brace will be in axial tension while the other brace is loaded in axial compression.


The depression at the meeting point of two roof slopes.

Vapor Barrier

Material such as paper, Plastic, Fiber, or metal or paint which is used to prevent vapor from passing from rooms into the outside walls.

Vent Pipe

A pipe which allows gas to escape from plumbing systems.


The edge of tiles, slates or shingles, projecting over the gable of a roof.

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